Filter plate



FIG. 1 is a top plan view of a filter plate showing our design;

FIG. 2 is a side elevational view of one of the two long side edges thereof, the other long side edge having the same appearance;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation of the small end thereof;

FIG. 5 is a rear elevation of the large end thereof; and,

FIG. 6 is an enlarged fragmentary top plan view of circled area 6 in FIG. 1. 

The ornamental design for a filter plate, as shown and described. 